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Finding the Fourth Proportional to 20,239.66, 30,361.03 and 5,448.71

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Solution

The fourth proportional to 20,239.66, 30,361.03 and 5,448.71 is: 8,173.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,239.66 : 30,361.03 = 5,448.71 : x
  2. Step 2: Convert to fraction form
    20,239.66/30,361.03 = 5,448.71/x
  3. Step 3: Cross multiply
    20,239.66x = 30,361.03 × 5,448.71
  4. Step 4: Simplify right side
    20,239.66x = 165,428,296.58
  5. Step 5: Solve for x
    x = 165,428,296.58/20,239.66
  6. Step 6: Final answer
    x = 8,173.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.